(PHP 4, PHP 5, PHP 7)
filemtime — 取锟斤拷锟侥硷拷锟睫革拷时锟斤拷
$filename
) : int锟斤拷锟斤拷锟斤拷锟斤拷锟斤拷锟侥硷拷锟叫碉拷锟斤拷锟捷匡拷锟较次憋拷写锟斤拷锟绞憋拷洌诧拷锟斤拷锟剿碉拷锟斤拷募锟斤拷锟斤拷锟斤拷锟斤拷洗伪锟斤拷薷牡锟绞憋拷洹�
filename锟侥硷拷锟斤拷路锟斤拷锟斤拷
锟斤拷锟斤拷锟侥硷拷锟较次憋拷锟睫改碉拷时锟戒， 锟斤拷锟斤拷锟斤拷失锟斤拷时锟斤拷锟斤拷 FALSE锟斤拷时锟斤拷锟斤拷 Unix 时锟斤拷锟斤拷姆锟绞斤拷锟斤拷兀锟斤拷锟斤拷锟斤拷锟�
date()锟斤拷
Example #1 filemtime() 锟斤拷锟斤拷
<?php
// outputs e.g. somefile.txt was last modified: December 29 2002 22:16:23.
$filename = 'somefile.txt';
if (file_exists($filename)) {
echo "$filename was last modified: " . date ("F d Y H:i:s.", filemtime($filename));
}
?>
失锟斤拷时锟阶筹拷E_WARNING锟斤拷锟芥。
Note:
注锟解：锟斤拷同锟侥硷拷系统锟斤拷时锟斤拷锟斤拷卸戏锟斤拷锟斤拷锟斤拷锟斤拷遣锟斤拷锟酵拷摹锟�
Note: 锟剿猴拷锟斤拷锟侥斤拷锟斤拷岜伙拷锟斤拷妗ｏ拷渭锟� clearstatcache() 锟皆伙拷酶锟斤拷锟较革拷凇锟�
锟斤拷 PHP 5.0.0 锟斤拷, 锟剿猴拷锟斤拷也锟斤拷锟斤拷某些 URL 锟斤拷装锟斤拷锟斤拷锟斤拷渭锟� 支锟街碉拷协锟斤拷头锟阶靶拷锟�锟皆伙拷锟街э拷锟� stat() 系锟叫猴拷锟斤拷锟斤拷锟杰的帮拷装锟斤拷锟叫憋拷